Microphone with a base



FIG. 1 is a right front view of a microphone with a base, with attached cord shown in dashed lines and not claimed;

FIG. 2 is a left side elevational view, the right side is a mirror image thereof;

FIG. 3 is a front elevational view;

FIG. 4 is a rear elevational view;

FIG. 5 is a top plan view; and,

FIG. 6 is a bottom plan view. 

The ornamental design for a microphone with a base, as shown and described. 